error:expected specifier-qualifier-list before

struct TreeNode

{

　　int value;

　　TreeNode* leftChild;

　　TreeNode* rightChild;

}

编译错误：error:expected specifier-qualifier-list before ‘TreeNode'

原因是struct没有命名

typedef struct TreeNode

{

　　int value;

　　struct TreeNode* leftChild;

　　struct TreeNode* rightChild;

}TreeNode;